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Finding the Fourth Proportional to 605.55, 909.15 and 401.43

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Solution

The fourth proportional to 605.55, 909.15 and 401.43 is: 602.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.55 : 909.15 = 401.43 : x
  2. Step 2: Convert to fraction form
    605.55/909.15 = 401.43/x
  3. Step 3: Cross multiply
    605.55x = 909.15 × 401.43
  4. Step 4: Simplify right side
    605.55x = 364,960.08
  5. Step 5: Solve for x
    x = 364,960.08/605.55
  6. Step 6: Final answer
    x = 602.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.